Internal-combustion engine



Jan. 20, 1931. v c T 1,789,397

INTERNAL COMBUSTION ENGINE Filed May 28, 1926 boresduring the crankingof Patented Jan. 20, 1931 UNITED STATES PATENT OFFICE JESSE G. VDTGEN'I,OF DETROIT, MICHIGAN, ASSIGNOR TO PACKARD MOTOR CAB COM- 1 rm, ormarrnorr, moment,

A CORPORATION OF MICHIGAN INTERNAL-COMBUSTION Application fled is as,

This invention relates to internal combustion engines, and moreparticularly to means for lubricating the piston cylinders of saidengine.

It is common in the internal combustion engine art to lubricate thecylinders by means operating only when the engine is working.

The object of the present invention is to provide means for lubricatinthe cylinder the engine, just preliminar to the starting of the engineproper. ith this object 1n view, the invention consists of means forsupplying the cylinder bores with a lubricant, preferably oil from thesump of the engine,which means are operated by the cranking mechanism,such for example as the electric starting motor. Any suitable meansoperated by the starting motor for directly ejecting a lubricant intothe cylinder bores throughtheir open lower ends may be employed.Preferably, a series of paddles is mounted on, a

horizontal shaft in the sump ofthe engine,

and so located and rotated at such speed that the oil' in the sump, evenwhen very cold,

will be copiously supplied directly to the cylinder bores and generouslylubricate the same during the cranking period.

- The inventive ide'ais capable of receiving a variety of mechanicalexpressions, one of which, for the purpose of illustrating theinvention, is shown in the accompanying drawings, but it will beexpressly understood that such drawings are for purposes of illustrationonly and are not intended to define the limits of the invention,reference being had to the appended claims for such purpose. In saiddrawings- Fig. 1 is a vertical cross-section of an in-- 4o ternalcombustion engine through one of the cylinders and the sump; and

Fig. 2 is a broken detail perspective show ing the application of theinvention.

In said drawings, 1 is the englne cylinder,

2 the piston, and 3 thesump containing lubricating oil. 4 is the usualor any suitable electrical starting motor, and 5 is the rear end of thearmature shaft of said starting motor. shaftfi is mounted longitudinallyof the sump and, as here shown, above the surface of the 1920. SerialNo. 112,365.

shaft 6. Preferably, the shaft 6 extends throughout the length ofthesump 3, and a sufficient number of paddles are supplied thereto toeffectively lubricate a series of cylinders of any desired numberarranged above the sump.

The operation of the mechanism will be readily understood. When thestartin motor is setin motion, the shaft 6 is rapid y revolved and theoil, even though the same may be very cold, is copiously supplied to'thecylinders through their open lower ends, so that they are eilicientlylubricated, and when the cranking motor 4 is stopped the operation oftheshaft and its paddles ceases, and the 1 cylinders are lubricated in theusual way by the ordinary lubricating mechanism of the engine.

What is claimed is 1. In an'internal combustion engine, the

combination of a piston cylinder, an oil sump located beneath thecylinder, an electric starting motor, and means operated by thestartingmotor for supplying oil directly from the sump to the piston cylinder,through the open lower ends thereof.

2. In an internal combustionengine, the combination of a pistoncylinder, an oil-sump beneath the same, a starting motor for saidengine, a shaft in said sump, means-opera tively connecting said shaftto the starting motor, and means actuated by said shaft for throwing oilinto the cylinder, through the lower open end.

3. In an internal combustionengine, the combination of a cylinder, anoil sump be-. neath the same, a starting motor, a shaft in the sump,paddles on said shaft which enter the oil in the sump when the shaft isrevolved, and operative connections between the armature shaft of thestarting motor and the paddle shaft in the sump. V

In testimony Whereof I ,have signed this specification. v

JESSE G. VINCENT.

